Front driveshaft swap question

[Jeff in VA]

Are MJ and XJ shafts the same? I'm in the process of a 4WD conversion on my MJ but cannot find an MJ front DS, but have a line on an XJ one. I checked replacement parts #'s on a couple different parts-store websites and they list the same # for both vehicles, but I don't trust parts stores much.....especially websites
Can anyone confirm that they will swap? The shaft is coming out of an XJ, AW4, NP229 and going into the MJ w/ AX5, NP231. Plain old D30 front axle.
Thanks!
Jeff

[Scott Mac.]

No it won't fit, but only because of the different drivetrain configuration. The AX5 is shorter than the AW4.
Also I have no idea what type of mounting system is used with the 229.

[Jeff in VA]

Thanks for the info, Mac.
Dumb question maybe, but would an XJ DS with the same driveline (AX5, 231) swap? If so, I can look for one of those.
Jeff

[SV1CEC]

Originally posted by Jeff in VA
Thanks for the info, Mac.
Dumb question maybe, but would an XJ DS with the same driveline (AX5, 231) swap? If so, I can look for one of those.
Jeff

It should swap. The difference between the various driveshafts is due to the different length. Engine+gearbox length defines where the driveshaft should start, to reach the axle. If one of the above is different, I think that the driveshaft will not fit.

Rgds

[TheGirlfriendYJ]

just take that driveshaft and get it cut down if it is too long ( about $30 at a DS shop) or get it retubed if it is too short (about $75 at a DS shop)...the ujoints are the same

[old_man]

If the DS is a standard Ujoint type configuration on each end instead of a flange, measure the distance between the center of the Ujoints and post it. I might have a shaft that would work for you.

Tom Houston
Loveland, Colorado